Telephone set.



eeee'eew hollow erm'5 is supperted through iti'lfiil:

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ins-teen. nqnnsnn' enn nntvtn s. EJRIBHATLEL'M? eemmnnemn WIRELESS KJEVELOPLEEEIJT ee.,.-es neeneiseo,

n GORPORATION enenizemt fipecification of- Let etent.

its all; whom it. may com-em it known that We, Perez: Id. Jensen; as sub cti; of the ltmg of Denmark, and

ll ilintv'xn' PRIDHAM, a eitizen oi"? the United hethresiding llz pe in the countyv jet Naps mitts-State of Celifeenie, have. he vented new "and useful Impii-eweinents' in 'f"eleph0ne' Sets, of which the :t'olldwing is ti specification.

Thisinvention relates t telephones andgperticulerly'to the combination of telephone i'eceiverend transmitten I The object of the piesent inventionis to pt-evide :1, practicalcommercial telephone set sdeptedfto be used when it "is not convenient to hold-the receiver to the 6211.

The invention consists oil the parts and. the combination and construction .ofpa'rts fes hereinaftef more fully described and claimed, having reference to the ecoempuny ingdi ewing .in which. the figure is an ele nation in partial section of e telephene' set iepresenting the invention.

In receiving telephone messages 1t is e'ften con nient to have one hand. free, and fer this :eason We employ tubes 2 --8 toconvey 'the sound'from astationary sound box 4; and connect one of the tubes, {RS 2,, fi mn the sound 100x toafihollow' fixedly supported min .5 which carries an emf piece (i against- Whieh'the head can he leaned. 'lhis awn 5 may be made adjustable, length. by means (if the clamp screw Y, that the ear-piece which is mounted upon it at a. convenient {place fear the listeneie Chis justahle joint 8 to the receiver box which permits a change of positmn that 'Is, 1t may he adjusted through a certain angle, be may he pushed back out of the Way when net...i n use. This hollow arm is made oit metel or other suitable firm neteiiel, and is ete'engly' supported h tQQI'QQGiVQ]: box it; the joint 8 hetweenthe earn; and the hex heing" so made the t when. the elem is placed in a certain pesitie remains sel ,idly in place, The other side of: the'soend hex is eennected'by means ptithe flexibletube its a hollow liun'ullev 9. Une end oftth ishellow handle ends in eat-piece it end en the other. end there is mounted a transmitter 11 a convenient distenee from the ease-piece 1G; The transmitter enei side 01 eeiw'eu electrically connected phone e uithi3? means '0'! 2:, heoh upen which the helloiv handle t smitten 11. and ezu'qiie f fling ef th V n suppci at; hen-uni a spring '13 causes the and. 15 te he closed thus putti' CQlVGl and transmitter into open dition. The type. of receiver sl the figure .eomprehends the "me'vcm coil pieced ,in astrong in netie is illustrated in outprior Patent January 21, 1913., In the ptes coil 16 isshown' attached t0 the ts' not shown .1. e The connection and receive il tn heel; sw. nude-i" iood the. made after the Well ltuewn j 75 n practice the hollow hen.

mo lll l vthe e:nrpiece and n lined :li 0111' the hook 'WlllCll puts e ment into operative con'dition hi/hen the emf-piece of this handle is placed to the em. the tmnsn'iitter at the 'pr'opei' distance freni the mouth for good articulation. The er emi my-then'he pressed epeinst the r'piece t) of the supported. helloiv' mun 5m 7 v cases may be only necessmiygte use t1 hollow handle for listening, but in case "the speech is Bryn-eel; We have. found it teihe a great. advantage to listen with two tnhes.-

The novelty of our inventionis; in the use With e'telephone receiver containing a sound hex, of a supported adjustable hollo'w men,

one end ofn hieh terminates in an emspie 2,, (the ether end being cenne'ctcd by e tube: t0 one side of the sound-box, and 2: hollew here die ee ected by a flexible tube to the other the sound hex, one"end. el which athei" end [inventinn 1011* ivers shown 0 he used reason it is terminates in an ear-piece and h mounted upon it e, tr It sheuld he'understeod th is net limited to the class 0i in he figure, hut it isedz h with any :eeceivei when lei not desirable t0 hold the tee we claim and desire to secure by Letters Patent is 1. In a telephone set, the combination with a sound box containing a diaphragm actuated by telephonic currents, of a movable hollow handle, said hollow handle having mounted upon it a transmitter, one end of said hollow handle terminating in an earpiece, the other end of said handle-being connected by a tube to said sound boX.

2. In a telephone set, the combination with a telephone receiver provided with a sound box, said sound box being divided into two air chambers by the diaphragm of said receiver, of an adjustable supported hollow arm, one-end of said arm terminat ing in an ear piece, the other end of said arm being connected by a tube to one ofsaid air chambers, and a movable hollow handle,

said handle having mounted upon it a transmitter, adapted to be included in the telephone circuit, one end of said hollow handle terminating in an ear-piece, the opposite end of said hollow handle being connected by. a

tube to the other of the aforementioned air chambers.

3. In a telephone set, comprising a trans mitter, hook switch, and a receiver, said re ceiver having its diaphragm placed in a sound box, the position of said diaphragm forming two air chambers in said sound box, an adjustable supported hollow arm, one end of said arm terminating in an ear-piece, the other end of said hollow arm being connected by a tube to one of said air chambers,

having mounted upon it a transmitter,

adapted to be included in the telephone cir uit, one end of said hollow handle terminating in an ear-piece, the other end of said hollow handle adapted to be connected by a flexible tube to a sound box, and an adjustable supported hollow arm, one end of said hollow arm terminating in an ear piece, the other end of said hollow arm connected by a tube to said sound box, with a telephone receiver of which said sound box forms a part, said telephone receiver adapted to be included in the telephone circuit, and a hook switch operated by theweight of said hollow handle by the removal of which said transmitter and receiver are put into operative condition, as hereinbeiiore set forth.

In testlmony whereot we have hereunto set our hands 1n the presence of two subscribing witnesses.

PETER L. J ENS-EN. EDIVIN S. PRIDHAM. Witnesses:

JOHN H. HERRING, W. IV. I-IEALEY. 

